Example of accessing all facebook ad accounts for a given user

ad_accounts_fb.js

var main_page_id = "1235324234324"
var page_url = "https://www.facebook.com/name-here-1235324234324";

fb.api('/oauth/access_token', {
    client_id: config.facebook_api_key,
    client_secret: config.facebook_api_secret,
    redirect_uri: 'https://localhost:4430/auth/callback',
    code: req.query.code // FYI, we're in an express.js handler
}, function(res_accesstoken) {
    if (!res_accesstoken || res_accesstoken.error) {
        console.log(!res_accesstoken ? 'error occurred' : res_accesstoken.error);
        return;
    }
    var accessToken = res_accesstoken.access_token;
    fb.api('/me/adaccounts', {
        access_token: accessToken
    }, function(res_adaccounts) {
        console.log(res_adaccounts);
        const adsSdk = require('facebook-nodejs-business-sdk');
        const api = adsSdk.FacebookAdsApi.init(accessToken);
        api.setDebug(true);
      
        const AdAccount = adsSdk.AdAccount;
        const account = new AdAccount(res_adaccounts.data[0].id);
    });
});